UMTS多载波功率放大器的有源偏置配置

2000 High Frequency Postgraduate Student Colloquium (Cat. No.00TH8539) Pub Date : 2000-09-07 DOI:10.1109/HFPSC.2000.874086

A. Zhu, P. Perry

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摘要

本文介绍了一种新颖、低成本的多载波UMTS功率放大器有源偏置控制配置。它只由一个检测器和一个增益控制运算放大器组成，它跟踪射频输入信号的包络线，将偏置电源电流调制到标准单片放大器。仿真结果表明，该方法提高了功率效率，降低了IMD水平。

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Active bias configuration for UMTS multi-carrier power amplifier

This paper describes a novel, low cost active bias control configuration for a multi-carrier UMTS power amplifier. It consists simply of a detector and a gain-controlled op-amp, which tracks the envelope of an RF input signal to modulate the bias supply current to a standard monolithic amplifier. Simulation results indicate that power efficiency is improved and IMD level is reduced.

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2000 High Frequency Postgraduate Student Colloquium (Cat. No.00TH8539)

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